Firearm



June 1 1926.

|.- N. JOHANSSON FIREARM Filed May 4. 1925 2 Sheets-Sheet l INVENTOR.

I Z /1./ Z707zana8o2z BY ATTORNEY June 1 1926. 1,586,810

I. N. JOHANSSON I FIREARM Filed May 4, 1925 2 Sheets-Sheet 2 INVENTOR.

[MC/"029a 59/2 BY ATTORNEY Patented June 1, 1926 ean via.

ISAACK N. JOHANSSON, OF SEATTLE, WASHINGTON.

FIREARM.

Application filed May 4,

the usual pivotal movement, in which later, owing to the changing line of pressure, there is apt to be an involuntary deflection of the revolver at the instant of firing.

The invention also provides a simple double-action mechanism with the disposition of the parts such that they may be converted into a single-action mechanism at will.

The invention is illustrated in the accompanying drawings, in which:

Fig. 1 is a view in elevation, partly in section, showing the revolver with the action mechanism in elevation.

Fig. 2 is an enlarged broken elevation showing the action in normal position.

Fig. 3 is a similar view showing the parts in position at the release of the trigger for the firing impact.

Fig. 2% is a similar view showing the action arranged for single control.

Fig. 5 is a broken elevation showing the means for limiting the movement of the trigger when the action is set for single control.

Fig. 6 is a broken elevation of the revolver showing the means for limiting the movement of the trigger.

Fi 7 is a section on line 77 of Fig. 1.

In the drawings, there is shown a conventional type of revolver having the improvements applied thereto, in which showing 1 represents the cylinder frame having the usual trigger guard the handle or grip 3, the cylinder 5 and the barrel A hammer 6 is pivotally supported on the usual pivot element 7, the frame being fo med with an opening 8 to permit the nec-' essary movements of the hammer. Pivotally supported at 9 in a recess 10 in the hammer is a double action lever 12 having a projection 11 seating in an oifset 13 of the recess 10, so that the lever is capable of a limited freemovement, and following such movement, will engage with av wall of the offset 13 to thereafter compel a movement of the hammer.

The trigger comprises a. bar 14 slidably mounted in a recess 15 in the frame and provided within the trigger guard with a curved finger piece 16. The trigger proper thus moves in right lines with a sliding 1925. Serial N0. 27,962.

movement, as distinguished from the usual pivoted trigger. A sear 17 is pivotally sup ported at 18 in the frame, and its lower end is pivotally connected at 19 to the trigger 14., a spring 20 influencing the sear in one direction as shown. scar is rounded on its forward edge as at 21, the rear surface of the upper end being inclined at 22 and formed with a notch A pin 24 fixed in the frame serves to limit the inoperative movement of the sear.

A pin 25 is carried by the hammer and formed with an offset projection 26 adapted,

under conditions to be described, to engage with the notch 23 in the sear.

The trigger bar 14 is formed in its upper edge in advance of the sear connection with a recess 27, and a limit lever 28 is pivotally supported in the frame and movable in a recess 29 to permit the lever to be turned into said recess to avoid engagement with the trigger bar or be turned down into said recess 27 to limit the movement of the trigger bar, as will be apparent. A spring pressed locking pin 30 is carried by the lever to coperate with notches 31 in the Wall of the recess 29 to hold the lever in either operative or inoperative positions.

The firing impact of the hammer is secured through the medium of a rod 32 slidably mounted in guide 33 projecting from the frame in a suitably formed recess, the upper end of the rod being rounded at 34 and seating in a rounded recess 35 in the edge of the hammer. A spring 35 encircles the rod 32 and bears between the lower guide 33 and a collar fixed on the rod.

The cylinder 4 is supported upon the usual center pin 87 and is rotated in each hammer action by any usual means indicated conventionally at 38 and held in firing position by any usual means illustrated conventionally at 39. To permit convenient removal of the cylinder, the pin 37 is mounted in an independent section of the frame. indicated at 10, which section is pivotally mounted at 4.1. The section 40 carries a pawl 42 adapted to engage in a recess l in the fixed part of the frame, the pawl being spring pressed in the locking direction by a spring 142 and connected to a finger piece 45 disposed on the outer side of the frame, whereby the pawl may be withdrawn at will and the cylinder swung laterally to permit removal of the same.

In operation, when the revolver is an The upper end of the contemplated aim, is avoided. more, the revolver may be readily changed ranged for double action, the lever 28 is turned to avoid engagement with the recess 27, and, assuming the hammer in firing position, as indicated in Fig. 2, movement of the trigger rearwardly will cause the sear to engage and rock the double action lever until the same engages the hammer, to contact with one wall of the recess 13, whereupon further movement of the trigger will move the hammer to cocked position, in which movement the spring 36 is tensioned. The movement continuesuntil the sear rides from beneath the end of the double actionv lever, whereupon the hammer is-released to the influence of the spring 36 acting through red 32, and said hammer is forced toward the cylinder and cartridge therein for the firing impact.

.Vhen it is desired to arrange the parts for single action, the lever 28 is turned down into the recess 2? to limit the movement of the trigger, and the hammer on being manually cooked in the usual manner, is moved until the projection 26 of the pin 25 engages the notch 23 in the sear 17. In this position, the hammer remains cocked until pressure is exerted upon the trigger which of course displaces the sear, frees the hammer, and permits the spring 36 to impart the necessary firing movement to the hammer. It is to be particularly noted that the movement of the trigger is a-sliding one, and that the firing uction results from a direct pull on the trigger as distinguished from the usual swinging or pivotal movement of the trigger. Thus the tendency of tilting the revolver, due to this pivotal pull on the trigger, and the consequent variation'of the Furtherfrom a. double action to a. single action, as is at times desired.

Claims:

1. In a fire arm of the revolver type, a frame, a hammer pivotally mounted therein, a trigger slidably mounted therein, a double action lever, a single action locking means carried by the hammer, a sliding trigger, and asear pivoted to the trigger .and adapted for co-action with either the double action lever or single action locking means at will, and means to limit movement of the trigger in the cooperation of the sear with the single action locking means.

2. In a fire arm, a frame, a hammer pivotjally mounted therein, a trigger slidably mounted therein, a. double action lever pivotally mounted on and having limited play relative to the hammer, and a sear pivot-ally mounted in the frame and connected to the trigger, one end of the sear being adapted to-cooperate with the double action lever to relative to the hammer, a sear pivotally mounted in the frame and connected to the rigger, one end of the sear being adapted to cooperate with the double action lever to initially swing such lever on its pivot to its limit in one direction and thereafter e2;- ert turning pressure on the hammer through such lever, the relation of the scar and lever beingsuch that following a predetermined movement of the sear it will ride by the lever to free the hammer, a rod connected to the hammer and sliding through a guide carried by the frame, and a spring encircling the rod and bearing between said guide and a stop on the rod, whereby in the movement of the hammer in one direction the spring is tensioned.

4. In a fire arm, a frame, a hamm r pivotally mounted therein, a trigger slidably mzounted therein, a double action lever pivotally mounted on and having limited play relative to the hammer, a pin carried by the hammer and formed with a peripheral shoulder, a sear pivotally mounted in the frame and connected to the trigger, said sear having a free terminal to cooperate with the double action lever for cooking the hammer, and being formed with a recess to cooperate with the shoulder of said pin when the hammer reaches a cocked position.

5. In a lire arm, a frame, a hammer pivotally mounted therein, a trigger slidably mounted therein, a double action lever pivotally mounted on and having limited play relative to the hammer, a pin carried by the hammer and formed with a peripheral shoulder, a sear pivotally mounted in the frame and connected to the trigger, said sear having a free terminal to cooperate withv the double action lev r for cocking the hammer, and being formed with a recess to cooperate with the shoulder of saidv pin when the hammer reaches a cocked position,

and a limit lever pivotally mounted in the frame and manually cooperating with the recess formed in the trigger to limit operative movement of the trigger at will.

In testimony whereof I my signa L ture.

ISAAGK N. J OHANSSON. 

